Finding 0 now works. For example:
[0 prefix:mathie](//en.wikipedia.org/wiki/Special:Search/0 prefix:mathie) shows the 68 of the 183 pages in that prefix.

I filed this report specifically to track a bug I had spotted in the CirrusSearch code while reviewing a change to MediaWiki core, not because I was unable to search for "0" at all. The particular link I provided in the description still leads to no results. If I can search for "1", without any punctuation, and get results, I should be able to do the same for "0". However, I am prevented from doing so by the bug I pointed out.

If this is not, as I am thinking, merely the result of a PHP misfeature, I would appreciate an explanation.

PleaseStand renamed this task from Can't search for the number "0" outside quotes to Can't search for the number "0" by itself, outside quotes.Jan 16 2016, 1:51 AM